Improvement in window-buttons



ALBERT D. JUDD, 0F NEW HAVEN, CONNECTICUTY Letters Patent No. 112,717, dated March 14, 1871.

IMPROVEMENT luw'l'Nnow-BUTToNs.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, ALBERT D. JUDD, of Nev.' Haven, inthe county of New Haven and State. oi' Connecticut, have invented a new Improvement in Sash-Fastener; and I do hereby declare the following, when taken in connection with' the accompanying drawing and the letters of reference marked thereon, to be a full, clear, and exact description ofthe same, and which said drawing constitutes part of this specitication, and represents in- Figure l, a side view;

Figure 2, a top View; l

Figure 3, a view from the under side, looking up Figure 4, a transverse section .Figure 5, an under-side view of the lever-plate, the lever detached;

Figure 6, a side view of the lever; and in .Figure 7, the spring.

This invention relates to an 'improvement in that class of sash-fasteners in which the lever is iixed to the upper sash and the keeper to the lower, so that by turning the lever onto the keeper the two sashes are locked together.

Heretofore the lever has been ixed to the leverplate by a pivot extending into or through the plate and riveted, and which, after a little use, is liable to.

become loose and rendered useless.

To overcome this diiiicu'lty, as well as to cheapeu the construction oi' the fastener, is the object of niy invention; and

It consists- First, in forming or fixing a stud upon the under side ot t-he lever, with an annular groove or seat around the said stud to set into a slot in the plate, the said slot on the plate and the annular groove on the lever forming the bearing upon which the lever turns.

Second, in the arrangement of a longitudinal spring within the said plate, bearing against the said stud (a flange or head on said stud serving to support the spring in its seat) on the lever, which extends through the plate for the purpose of retaining the lever in the several desired positions.

A is the lever-plate.

B, the lever. l

C, tbe keeper, in external appearance not mate rially diii'ering from sash-fasteners of this class.AV

The lever B is constructed with a stud, b, extending down from the base D of the lever, as seen in f. 6.

Immediately below the base D I form an annular groove, a, around the stud, and the part c, immediately belowsquare, or nearly so, and below' this a flange, d, projecting slightly beyond the square portion c.

I form the lever and this construction of stud in one piece, 'andby the process of casting.

The plate A is chambered out, as seen in iig. 4, and is formed with a slot, E, as seen in fig. 5, in its upper surface, the said slot E corresponding in width tothe cylindrical portion or annular groove into the said slot and turn to the right or left therein, the square portion c below the plate andthe base of the lever above forming a su'icient bearing to retain the lever in its vertical position.

Within the chamber of the plate A I arrange the spring F, which is simply a dat metal spring extending from end to end, or otherwise supported, and bearing against the square portion of the stud, as seen in tig. 4, the ilange l supporting thespring as the lever is turned from right to left, the'spring yields to pass the angles of the stud, and tends to throw the lever into either of its two extremes or vcentral positions.

' The plate A is secured tothe upperAsash-bar I, andthe keeper to the lower sash-bar L, in the usual manner, and when so fixed the lever is operated in the usual manner. l

This construction simplifies the manufacture, inasmuch as the two parts A and B are both cast, and require nothing further than the tumbling-barrel to prepare them to be set together, thus reducing the cost ot' manufacture to the cost ot' the castings.

Another advantage which `this fastener possesses arises from the fact, that, if desirable, it may be made a hlu'glar-prooftstening.

In '.iig. 2- the lever-plate is represented as lxed to the sash-bar with the slot in the rear.

To make the fastener burglar-proof, it is onlynecessary that the plate be set on the sash-bar in the reverse position-that is, so as to bring the spring and slot upon the front side, as denoted in broken lines, iig. 4; then, with a notch in the front of the keeper, the lever is. drawn around to place, the spring yielding for the lever to pass over the keeper until the nose ot' the lever reaches the notch in thekeeper; then the spring will draw the lever into the said notch and lockA it into position, from which it can only be removed by drawing ythe lever forward to release it from the notch.

` 1t will he observed that, if the spring F is dispensed with, the idange d on the stud will not be required.

I donot claim the invention of' the spring within the plate. v

l claim as my inventionl. The lever B, constructed or provided with the stud b, and combined with the plate A, constructed with the slot E to receive the said stud and form a bearing for the lever, substantially as set forth.

2.A In combination with the level' B and plate A, constructed and arranged to operate as described, the spring F, and flange d on the stud, as and for the purpose speciiied.

ALBERT D. JUDD.

Witnesses:

J. H. SHUMWAY.-

a. on the stud, so thatv the stud may slide freelyj and preventing its accidental removal. Therefore, 

